A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 7035-01-388-4298
NSN 5960-01-381-2478
NSN 6130-00-291-4877
NSN 2925-00-623-3103
NSN 6610-01-518-8344
NSN 5998-01-026-1979
NSN 6135-00-990-1822
NSN 6240-01-422-3461
NSN 5905-01-383-2926
NSN 5975-00-738-6055
NSN 5996-01-120-5067
NSN 5910-00-824-0006